食品科学

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茄枝多糖的分离纯化及成分分析

魏 杰,吕 磊,金莉莉,王秋雨*   

  1. 辽宁大学生命科学院,辽宁 沈阳 110036
  • 出版日期:2015-02-25 发布日期:2015-02-16
  • 通讯作者: 王秋雨
  • 基金资助:

    沈阳市科技计划项目(F12-277-1-40);辽宁省教育厅一般项目(L2013007)

Extraction and Monosaccharide Composition Analysis of Polysaccharides from Eggplant Branches

WEI Jie, LÜ Lei, JIN Lili, WANG Qiuyu*   

  1. School of Life Science, Liaoning University, Shenyang 110036, China
  • Online:2015-02-25 Published:2015-02-16
  • Contact: WANG Qiuyu

摘要:

研究茄枝多糖的提取工艺和主要单糖组分。通过水提工艺,比较三氯乙酸(trichloroacetic acid,TCA)、Sevag、TCA与木瓜蛋白酶结合、Sevag与木瓜蛋白酶结合4 种脱除蛋白方法,使用DEAE-D22纤维素柱与SephadexG-100柱层析精制获得茄枝多糖ESP1-1,并对其进行薄层色谱(thin layer chromatography,TLC)、高效液相色谱(high performance liquid chromatography,HPLC)检测与组分分析。木瓜蛋白酶与TCA法结合脱除蛋白效果最佳,蛋白清除率达到93%,多糖损失率为45.3%;TLC、HPLC检测与分析证明ESP1-1具有多糖的理化性质,主要由甘露糖、葡萄糖、果糖、木糖4 种单糖组成。研究结果可为茄枝多糖的开发应用提供理论支持。

关键词: 茄枝多糖, 分离纯化, 单糖组成, 高效液相色谱

Abstract:

Objective: To study the extraction and monosaccharide composition of polysaccharides from eggplant branches.
Methods: The aqueous extract of eggplant branches was deprotenized by four different methods, trichloroacetic acid
(TCA), Sevag, combination of TCA with papain, combination of Sevag with papain. Further purification was conducted
by DEAE-D22 cellulose and Sephadex G-100 gel column chromatograph sequentially. The obtained polysaccharide
was analyzed by thin-layer chromatography (TLC) and high performance liquid chromatography (HPLC). Results: A
polysaccharide, named as ESP-1, was obtained. Meanwhile, the best deproteinization method was achieved by the combined
use of TCA and papain, resulting in a deproteinization rate of 93% and a polysaccharide loss of 45.3%. By TLC and HPLC,
the polysaccharide was confirmed based on its physicochemical properties. In addition, ESP1-1 was mainly composed of
mannose, glucose, fructose and xylose.

Key words: polysaccharide from eggplant branches, purification, monosaccharide composition, high performance liquid chromatography (HPLC)

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